Machine for covering cord



Sept. 1, 1925. 1,551,582

P. RISSMAN MQCHINE FOR COVERING CORD Filed March 19, 1923 2 Sheets-Sheet 1 Sam-genre:

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Sept. 1, 1925. 1,551,582 P RISSMAN MACHINE FOR-COVERING com) Filed March 19, 1923 a Sheets-Sheet '2 Patented Sept 1, 1925.

UNITED, STATES I PAUL RISSMAN, OF DETROIT, MICHIGAN, ASSIGNOR TO DETROIT INSULATED 60., OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

I 1,551,582 PATENT" oF icE.

WIRE

uacnnmron cov'nnme com).

Application filed March 19, 1923. Serial No, 626,198.

. To all whom it may concern;

and ttate of Michigan, have invented oer-V p tain new and useful Improvements in Machines for Covering Cord, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to machines for attaching a fabric covering to flexible cords or ropes, .and the invention consists in the novel construction as hereinafter set forth.

In the drawings:

Figure 1 is a side elevation;

Figure 2 is a plan view;

Figure 3' is a frontelevation;

Figure 4 is a perspective view of the stitching, cover and cord guiding and feeding means,

igure 5 is a longitudinal section through the feed mechanism showing the work in engagement therewith.

- Heretofore machines have been devised for the same purpose comprising a loop stitch sewmgmachme w1th a transversely oscillating segmental needle together with means for intermittently feeding the rope or cord and guiding means for wrapping the fabric cover about the cord with its adjacent edges in position to be stitched by the needle. The defect of such former constructions is in the lackof uniformity in the op- .eration of the feeding mechanism for the core and its covering, this being due to the fact that the cover completely surrounds .the cord or coreand prevents direct engagement therewith. The improved construction which forms the subject matter of the present invention avoids this defect by providing a means for positively feeding the cord independently of the feed for the cover, so that both cord and cover are moved uniformly, and simultaneously.

The sewing machine, which is of a known type comprises a base A, a pedestal B rising therefrom, a revoluble shaft G journaled in said pedestal havin a crank C at one end connected by a link to an oscillatory shaft E journaled-in the bracket arm F projecting from the pedestal B. At the outer end of the oscillatory shaft E is the needle carrying rock arm G ha'ving' acsegmental needle H attached thereto and also carrying the thread guide H. I is a loop carrier which is actuated from the crank C through an intermediate mechanism J such that the loopis picked from the thread of the needle H and is transferred to produce a chain stitch.

. Beneath the oscillatory needle and extendmg in the plane thereof is a feed shaft J to which an intermittent step-by-step rotation s imparted through the medium of mechanism, including a pitman K engagin a crank or eccentric on the shaft C connected to a rock arm L, which in turn is connected by a link M with a pawl N engaging a ratchet wheel N on the shaft J. The shaft J also-has mounted thereon beneath the center of the oscillatory movement of the needle a point and is intermediate the same and the feeding teeth. a

The covering material and the cord or rope are guided in their movement towards the feed roll 0 by a guide member P,which has a portion P for receiving the fabric strip and an inner portion P for receiving the cord. The portion P is so fashioned as to guide the cover around the cord, turning under the edge portions of the cover and guiding these turned edge portions adjacent to each otherand into the path of the oscillatory needle H. Thus, in the operation of the machine the cord and cover are intermittently advanced and the oscillatory needle H in cooperation with the loop carrier I will stretch the edges of the cover together. There is, however, the difficulty, previously referred to,rthat the feed roll 0 engages the cord only through the medium with the top of the cord. This member 'Q,

is toothed or serrated and i s-carried by an arm R actuated by the pitman K. The

movement imparted to the member Q, is first a downward movement anto engagement with the cord, then forward to feed the cord 7 upward out of engagement therewith and rearward to its initial position. This movement is timed with that of the feed roll 0 so that at the same time the feed roll is advancing the cover surrounding the cord, the member Q is advancing the cord itself, and as the one feed is at the bottom and the other at the top, skewing of the material is avoided.

A more complete showing of the type of machine to which the disclosed improvements are applied may be found in the patent to Goldberg, 1,187,724, June 20, 1916.

From the above description it will be understood that the machine in operating is positive in its action, this being probably due to the fact that both covering material and cord are simultaneously fed and that the two feeding devices are arranged respectively on diametrically opposite sides of the cord.

What I claim as my invention is: 1. The combination with means for gu1dlng a covering strip about a cord or rope,

, of stitching means for uniting the edges of the covering strip, and means for intermittently advancing the cord directly engaging an uncovered portion thereof.

2. The combination with-means for guiding a covering strip-about a cord or rope,

of stitching means for uniting the edges of said covering strip, and means for intermittently advancing the cord directly engaging an uncovered portion thereof adjacent to the stitching means.

3. The combination with means for guiding acovering strip about a cord or rope, of stitching means for uniting the edges of said covering strip, of -means directly engaging the cord between the edges of the cover stri and adjacent to the stitching means for intermittently advancing the cord.

4:. The combination with means for guiding a covering strip about a cord or rope, of stitching means for uniting the edges of said covering strip, of intermittent feeding means engaging the covered portion of the cord, and cooperating feeding means for directly engaging an uncovered portion of the cord. a J

5. The combination with means for guiding a covering strip. about a cord or rope,

menses of stitching meansv for uniting the edges of said covering strip, of intermittent feeding means embracing the covered portion of the cord and cooperating feeding means directly engaging the cord between the adjacent edges of the cover strip.

6. The combination with means for guidof stitching means for uniting the edges of said covering strip, of an intermittently actuated grooved feed roll for embracing the covered portion of the cord, and a cooperating oscillatory feeder directly engaging the cord between the edges of the cover strip.

7. The combination with means for guiding a covering strip about a cord or rope, of stitching means for uniting the edges of said covering strip, of an intermittently actuated grooved feed roll, toothed or serrated at the bottom of the groove and embracing the covered portion of the cord, a toothed member arranged in the central plane of the cord between the edges of the cover strip, and means for oscillating said member and for pressing the same into engagement with the cord during the forward phase of the movement and disengaging from the cord in the rear phase of said movement.

.8. The combination with means for guiding a covering strip about a cord or rope, of stitching means including an oscillatory curved needle for passing through the a jacent edges of the covering strip, an inter mittently actuated grooved feed roll beneath the oscillatory needle adapted to embrace the covered portion of the cord and to advance the same, and an oscillatory feeding member engaging the cord in the central plane thereof between the adjacent edges of the cover and cooperating with said feed roll to uniformly feed the cover and cord.' 9. The combination with means for guiding a covering strip about a cord or rope, of means for uniting the edges of the covering strip as the same is applied to said cord, means directly engaging an uncovered portion of the cord for advancing the same, and means engaging a portion of the cover applied to the cord for advancing the same in unison with the cord.

In testimony whereof I affix my signature.

' PAUL RISSMAN.

ing a covering strip about a cord or rope,' 

